FR2702652A1 - Method of manufacturing anti-decubitus mattresses. - Google Patents
Method of manufacturing anti-decubitus mattresses. Download PDFInfo
- Publication number
- FR2702652A1 FR2702652A1 FR9303247A FR9303247A FR2702652A1 FR 2702652 A1 FR2702652 A1 FR 2702652A1 FR 9303247 A FR9303247 A FR 9303247A FR 9303247 A FR9303247 A FR 9303247A FR 2702652 A1 FR2702652 A1 FR 2702652A1
- Authority
- FR
- France
- Prior art keywords
- foam
- mattress
- modules
- mold
- decubitus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
- A61G7/057—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
- A61G7/05707—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with integral, body-bearing projections or protuberances
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C33/424—Moulding surfaces provided with means for marking or patterning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
- B29C37/0028—In-mould coating, e.g. by introducing the coating material into the mould after forming the article
- B29C37/0032—In-mould coating, e.g. by introducing the coating material into the mould after forming the article the coating being applied upon the mould surface before introducing the moulding compound, e.g. applying a gelcoat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
- B29K2105/045—Condition, form or state of moulded material or of the material to be shaped cellular or porous with open cells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/751—Mattresses, cushions
Abstract
Procédé de fabrication d'un matelas anti-escarres, caractérisé en ce qu'on réalise une opération de moulage d'un matelas (4) en mousse (2) alvéolaire anti-escarres constitué d'une pluralité de modules (3) juxtaposables, chaque moule de module comprenant une partie de fond (5) qui comporte une pluralité de reliefs (6) qui présentent sur la face supérieure du moule une pluralité de plots du type gaufre et une partie supérieure du moule formant couvercle (8), muni sur la face en regard de la semelle (7) du matelas, d'une pluralité d'ondulations (10) notamment longitudinales, transversales ou croisées, afin d'éviter la formation de bulles d'air de volume trop important au moment du moulage; on prévoit en outre, préalablement à l'opération de dépôt du mélange des divers constituants liquides qui forment la mousse après expansion et moulage et on projette une couche d'un agent (12, 13) sur l'interface entre les parois dudit moule et la mousse (2) venant en contact.A method of manufacturing an anti-decubitus mattress, characterized in that an operation of molding a mattress (4) of anti-decubitus foam (2) made of a plurality of juxtaposable modules (3) is carried out, each module mold comprising a bottom part (5) which comprises a plurality of reliefs (6) which have on the upper face of the mold a plurality of waffle-type studs and an upper part of the mold forming a cover (8), provided on the opposite face of the sole (7) of the mattress, of a plurality of corrugations (10) in particular longitudinal, transverse or crossed, in order to avoid the formation of air bubbles of excessive volume during molding; provision is also made, prior to the operation of depositing the mixture of the various liquid constituents which form the foam after expansion and molding, and a layer of an agent (12, 13) is projected onto the interface between the walls of said mold and the foam (2) coming into contact.
Description
La présente invention est relative à un procédé de fabrication de matelas en vue d'applications thérapeutiques dans le domaine de la prévention et du traitement de l'escarre. The present invention relates to a method of manufacturing mattresses for therapeutic applications in the field of prevention and treatment of bedsores.
Les supports anti-escarres visent à réduire au minimum les surpressions et le cisaillement des zones à risques d'un individu (occiput, sacrum, épaules, talons par exemple en décubitus dorsal) lors de l'alitement prolongé. Anti-decubitus supports aim to minimize overpressure and shearing of an individual's risk areas (occiput, sacrum, shoulders, heels, for example in supine position) during prolonged bed rest.
Les procédés connus résident principalement par la mise en oeuvre de technologies sophistiquées, tels que notamment les lits fluidisés qui augmentent la surface des zones de contact du patient sur le support et diminuent la pression par l'action d'un fluide, tels que décrits dans le brevet FR-1 516 528 ; ou plus simples tels que les matelas en forme de gaufrier. Ces matelas, d'une seule pièce ou composés, pour plus de facilité de manipulation, de modules dont l'ensemble juxtaposé présente les dimensions d'un matelas, sont en mousse alvéolaire (à cellules). The known methods mainly reside in the use of sophisticated technologies, such as in particular fluidized beds which increase the surface of the patient's contact areas on the support and reduce the pressure by the action of a fluid, as described in FR-1,516,528; or simpler ones such as waffle-shaped mattresses. These mattresses, in one piece or made up, for easier handling, of modules, the juxtaposed assembly having the dimensions of a mattress, are of cellular foam.
Chaque module comprend une partie de fond ou semelle et une partie supérieure présentant des reliefs du type de ceux d'un moule à gaufre, c'est-à-dire comportant une pluralité de plots juxtaposés réalisés par découpe ou moulage. Ces divers procédés de sustentation présentent les inconvénients respectifs majeurs, l'un est d'un emploi et de maintenance coûteuse souvent réservé à des pathologies sérieuses telles que les brûlés, l'autre nécessite des opérations de découpe, soit pour obtenir la forme définitive, soit pour éliminer les mauvais aspects de la surface, tels que des grosses bulles ou des inclusions d'air sur quelques centimètres de profondeur sur la face visible de la semelle, opérations qui nécessitent des manipulations longues et coûteuses.Each module comprises a bottom part or sole and an upper part having reliefs of the type of those of a waffle mold, that is to say comprising a plurality of juxtaposed studs produced by cutting or molding. These various lifting processes have the respective major drawbacks, one is costly to use and maintain, often reserved for serious pathologies such as burns, the other requires cutting operations, either to obtain the final shape, either to eliminate bad aspects of the surface, such as large bubbles or air inclusions a few centimeters deep on the visible face of the sole, operations which require long and costly manipulations.
La présente invention se propose d'apporter des solutions permettant de remédier aux inconvénients des procédés connus antérieurement. The present invention proposes to provide solutions making it possible to remedy the drawbacks of the previously known methods.
En conséquence, cette invention a pour objet un procédé de fabrication d'un matelas anti-escarres, caractérisé en ce qu'on réalise une opération de moulage d'un matelas, en mousse alvéolaire, anti-escarres constitué d'une pluralité de modules juxtaposables, chaque moule de module comprenant une partie de fond présentant sur sa face supérieure une pluralité de reliefs ou alvéoles pour plots du type gaufrier et une partie du moule formant couvercle, muni sur sa face en regard du fond d'une pluralité d'ondulations notamment longitudinales, transversales ou croisées, afin d'éviter la formation de bulles d'air de volume trop important ;; on prévoit en outre que préalablement à l'opération de dépôt et de moulage du mélange des divers constituants de la mousse, on projette une couche d'un agent sur l'interface entre les parois dudit moule et la mousse venant en contact. Consequently, the subject of this invention is a method for manufacturing an anti-decubitus mattress, characterized in that an operation is carried out for molding a mattress, made of anti-decubitus foam, consisting of a plurality of modules. juxtaposed, each module mold comprising a bottom part having on its upper face a plurality of reliefs or cells for waffle-type studs and a part of the mold forming a cover, provided on its face facing the bottom with a plurality of undulations in particular longitudinal, transverse or crossed, in order to avoid the formation of air bubbles of too large volume; it is further provided that prior to the operation of depositing and molding the mixture of the various constituents of the foam, a layer of an agent is projected onto the interface between the walls of said mold and the foam coming into contact.
D'autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-apres, en référence aux dessins annexés qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif. Sur les figures
- La figure 1 est une vue en perspective d'un matelas obtenu par la mise en oeuvre du procédé, objet de l'invention
- La figure 2 est une vue en coupe, en élévation frontale d'un moule non rempli, servant à la mise en oeuvre du procédé ;
- La figure 2a est un détail à une plus grande échelle des aspérités présentes sur le couvercle ;
- La figure 3 est une vue en coupe, en élévation frontale d'un moule rempli de mousse
- La figure 4 est une vue en coupe d'un moule en cours de remplissage par la mousse en expansion du futur module.Other characteristics and advantages of the present invention will emerge from the description given below, with reference to the appended drawings which illustrate an embodiment thereof devoid of any limiting character. In the figures
- Figure 1 is a perspective view of a mattress obtained by the implementation of the method, object of the invention
- Figure 2 is a sectional view, in front elevation of an unfilled mold, used for the implementation of the method;
- Figure 2a is a detail on a larger scale of the roughness present on the cover;
- Figure 3 is a sectional view, in front elevation of a mold filled with foam
- Figure 4 is a sectional view of a mold being filled with the expanding foam of the future module.
Selon un exemple préféré de réalisation du procédé de fabrication d'un matelas anti-escarres, se reporter à la figure 1 sur laquelle on aperçoit un matelas obtenu selon la mise en oeuvre du procédé, objet de l'invention ; ainsi, des plots en relief 2 obtenus par séparation du moule en forme de gaufre sont retenus par leur base respective sur l'étendue d'une semelle 7 constituée en un matériau similaire aux plots. Chacun des modules ainsi élaboré est réuni par l'une de leurs faces communes, de manière à conformer un matelas.On réalise donc dans une pluralité de moules 1 dont la forme et le gabarit sont adaptés au produit désiré, un moulage d'une mousse 16 de type polyuréthanne obtenue par la réaction chimique d'au moins deux constituants liquides tels que notamment du polyol et de l'isocyanate, ou du latex en vue d'obtenir après arrêt de la réaction de polymérisation, une pluralité de modules 3 juxtaposables destinés notamment à conformer des matelas 4. According to a preferred embodiment of the method for manufacturing an anti-decubitus mattress, refer to FIG. 1 on which we can see a mattress obtained according to the implementation of the method, object of the invention; thus, raised studs 2 obtained by separation of the waffle-shaped mold are retained by their respective base on the extent of a sole 7 made of a material similar to the studs. Each of the modules thus produced is joined by one of their common faces, so as to conform a mattress. In a plurality of molds 1, the shape and the size of which are adapted to the desired product, a molding of a foam is produced. 16 of polyurethane type obtained by the chemical reaction of at least two liquid constituents such as in particular polyol and isocyanate, or latex with a view to obtaining, after the polymerization reaction has stopped, a plurality of juxtaposable modules 3 intended in particular to conform mattresses 4.
Le fond 5 de chaque moule 1 est pourvu d'une pluralité de reliefs 6 ou alvéoles ou plots en creux, dirigés vers le bas, notamment du type gaufre, cette configuration avantageuse supprime les effets de cisaillement d'une surface de contact patient/matelas uniforme, qui généralement dans ce cas est source de formation d'escarres. The bottom 5 of each mold 1 is provided with a plurality of reliefs 6 or recesses or hollow studs, directed downwards, in particular of the waffle type, this advantageous configuration eliminates the shearing effects of a patient / mattress contact surface uniform, which generally in this case is a source of pressure ulcer formation.
On procède au coulage ou dépôt dans le même moule 1 dans chaque alvéole du mélange liquide des constituants de la mousse (de façon à éviter les problèmes de migration de la mousse dans les alvéoles si le dépôt était effectué en un ou même plusieurs points du moule mais pas dans toutes les alvéoles). Les constituants liquides de la mousse après réaction entre eux s'expansent et forment une mousse alvéolaire qui s'élève en forme de coupole au-dessus de chaque alvéole (figure 4) et vient buter sur le couvercle laissant les inclusions résiduelles 17 d'air ambiant du moule et de gaz. The liquid mixture of the constituents of the foam is poured or deposited in the same mold 1 in each cell (so as to avoid the problems of migration of the foam in the cells if the deposition was carried out at one or even more points of the mold but not in all the alveoli). The liquid constituents of the foam after reaction between them expand and form an alveolar foam which rises in the form of a dome above each alveolus (FIG. 4) and abuts on the cover leaving the residual inclusions 17 of air ambient mold and gas.
Afin de réduire au maximum la taille des bulles de gaz qui se dégagent au travers de tout le volume desdits modules lors de la réaction de moussage, de polymérisation, on dispose sur l'ensemble desdits moules 1 et en regard du fond, une pluralité de couvercles 8 dont chacune des faces 9 internes en vis-à-vis de la mousse 16 est pourvue d'une pluralité d'aspérités 10 conformées notamment sous forme de petites ondulations longitudinales, transversales, croisées. Ces aspérités 10 en relief permettent de briser, de répartir toutes les petites bulles d'air qui se présentent et de les diriger éventuellement vers une pluralité d'évents 11 disposés sur lesdits couvercles 8, puis vers l'atmosphère. Ces évents 11 sont obstrués dès que de la mousse apparait à l'extérieur.Les quantités de gaz emprisonné à l'interface mousse/couvercle et particulièrement aux zones de croisement sont infimes et autorisent ainsi de ne pas retoucher, dans le cas présent, par un surfaçage et par un enlèvement de matière, la surface d'assise desdits modules ; la quantité de déchets devient donc négligeable. Par ailleurs, l'absence de cavités dans les modules de volume important provenant d'une poche d'air résiduelle améliore énormément la tenue dudit matelas au cours du temps ; en effet, le poids du patient est réparti uniformément sur toute la surface dudit matelas, il n'y a pas d'enfoncement de zones non homogènes, la déformation du matelas est identique en tout endroit. In order to minimize the size of the gas bubbles which emerge through the entire volume of said modules during the foaming or polymerization reaction, a plurality of said molds 1 are available and facing the bottom, a plurality of covers 8, each of the internal faces 9 facing the foam 16 is provided with a plurality of asperities 10 shaped in particular in the form of small longitudinal, transverse, crossed corrugations. These asperities 10 in relief make it possible to break up, distribute all the small air bubbles which present themselves and optionally direct them towards a plurality of vents 11 arranged on said covers 8, then towards the atmosphere. These vents 11 are obstructed as soon as foam appears on the outside. The quantities of gas trapped at the foam / cover interface and particularly at the crossing zones are minute and thus allow not to touch up, in the present case, by surfacing and by removing material, the seating surface of said modules; the amount of waste therefore becomes negligible. Furthermore, the absence of cavities in the modules of large volume originating from a residual air pocket considerably improves the behavior of said mattress over time; in fact, the patient's weight is distributed uniformly over the entire surface of said mattress, there is no sinking of non-homogeneous areas, the deformation of the mattress is identical in all places.
On prévoit également de munir quelques parois constituant les modules du moule de ces mêmes aspérités, l'effet esthétique du produit fini est identique sur toutes ses faces. It is also planned to provide a few walls constituting the mold modules with these same roughness, the aesthetic effect of the finished product is identical on all its faces.
On peut aussi, afin de masquer la multitude de minuscules cellules d'air ou de gaz qui résident en surface de la mousse, projeter une peinture 12 dite de fond de moule, qui peut avantageusement posséder des propriétés curatives ou anallergiques, sur l'ensemble des parois desdits moules 1 et desdits couvercles 8, étant bien entendu que cette opération de finition sera postérieure à celle du dépôt d'une cire 13 de démoulage avant la mise en place du mélange moussant.Le coulage de cette mousse s'effectue pratiquement toujours couvercle ouvert afin que la majeure partie du dégagement gazeux se répande à l'atmosphère le plus rapidement possible et surtout avant le commencement de la réaction de polymérisation, ce qui facilite également la répartition uniforme et homogène de la mousse au sein desdits modules, étant bien entendu que l'on aura pris soin de répartir uniformément le mélange initial au fond de chaque alvéole 6 du moule. It is also possible, in order to mask the multitude of tiny air or gas cells which reside on the surface of the foam, to spray a paint 12 called the mold bottom, which can advantageously have curative or hypoallergenic properties, on the whole. of the walls of said molds 1 and of said covers 8, it being understood that this finishing operation will be subsequent to that of the deposition of a demolding wax 13 before the establishment of the foaming mixture. The pouring of this foam is practically always carried out cover open so that most of the gassing spreads to the atmosphere as quickly as possible and especially before the start of the polymerization reaction, which also facilitates the uniform and homogeneous distribution of the foam within said modules, being well it is understood that care will have been taken to distribute the initial mixture uniformly at the bottom of each cell 6 of the mold.
Ladite peinture de fond de moule qui forme le revêtement de surface du module adhère parfaitement à la mousse polymérisée, elle se comporte comme une peau, masquant ainsi toutes les petites cellules. Par ce procédé avantageux, il est impossible que ladite peau occulte une cavité importante qui aurait pu subsister si l'on n'avait pas mis en place ledit couvercle. Said mold base paint which forms the surface coating of the module adheres perfectly to the polymerized foam, it behaves like a skin, thus masking all the small cells. By this advantageous process, it is impossible for said skin to conceal a large cavity which could have remained if said cover had not been put in place.
Le revêtement de surface 12 est peu perméable à l'air. Afin que lors du couchage du patient, l'air contenu dans le matelas puisse s'évacuer, on prévoit une pluralité de trous 14 par découpe, poinçonnage ou tout autre procédé, avant ou après démoulage complet de l'épaisseur du revêtement de surface de préférence sur la face d'assise dudit matelas (face la moins exposée aux souillures du patient) pour l'évacuation de l'air contenu dans le module du matelas lors de l'alitement. En fonction de la surface ouverte des trous 14, l'air s'échappe plus ou moins rapidement. The surface coating 12 is not very permeable to air. So that when the patient is sleeping, the air contained in the mattress can be evacuated, a plurality of holes 14 are provided by cutting, punching or any other method, before or after the complete removal of the thickness of the surface coating from preferably on the seat face of said mattress (face least exposed to the patient's stains) for the evacuation of the air contained in the module of the mattress during bed rest. Depending on the open surface of the holes 14, the air escapes more or less quickly.
La présente invention est avantageuse dans son mode de conception de réalisation car un tel matelas reprend plus ou moins lentement sa forme initiale après suppression de la sollicitation, elle se substitue aisément aux matelas fabriqués à partir d'une mousse à mémoire de forme, qui sont très sensibles à la température ambiante : ainsi, pour une température froide, on obtient une mousse dure, tandis que pour une température chaude, on obtient une mousse molle, les modifications de réaction du support facilitant l'apparition des escarres. The present invention is advantageous in its embodiment since such a mattress more or less slowly returns to its initial shape after the stress has been removed, it easily replaces mattresses made from memory foam, which are very sensitive to the ambient temperature: thus, for a cold temperature, one obtains a hard foam, while for a hot temperature, one obtains a soft foam, the modifications of reaction of the support facilitating the appearance of bedsores.
Selon l'invention, la mise en oeuvre de ce procédé peut s'appliquer à la réalisation de toute enveloppe en mousse participant au confort d'un individu, telle que coussins, reposenuque, dossiers, poufs ..., ou comme matériau de protection pour des emballages de produits fragiles. According to the invention, the implementation of this method can be applied to the production of any foam envelope contributing to the comfort of an individual, such as cushions, rests, backrests, poufs ..., or as protective material for packaging fragile products.
Il demeure bien entendu que la présente invention n'est pas limitée aux exemples de réalisation décrits et représentés cidessus, mais qu'elle en englobe toutes les variantes. It remains to be understood that the present invention is not limited to the embodiments described and shown above, but that it encompasses all variants thereof.
Claims (8)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9303247A FR2702652B1 (en) | 1993-03-18 | 1993-03-18 | Method for manufacturing anti-decubitus mattresses. |
| PCT/FR1994/000293 WO1994021437A1 (en) | 1993-03-18 | 1994-03-17 | Method for making an anti-bedsore mattress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9303247A FR2702652B1 (en) | 1993-03-18 | 1993-03-18 | Method for manufacturing anti-decubitus mattresses. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2702652A1 true FR2702652A1 (en) | 1994-09-23 |
| FR2702652B1 FR2702652B1 (en) | 2000-06-30 |
Family
ID=9445191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9303247A Expired - Fee Related FR2702652B1 (en) | 1993-03-18 | 1993-03-18 | Method for manufacturing anti-decubitus mattresses. |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2702652B1 (en) |
| WO (1) | WO1994021437A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2736823B1 (en) * | 1995-07-18 | 1997-12-19 | Roux Georges | PROCESS FOR THE MANUFACTURE OF ANTI-PRESSURE MATTRESS |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3258511A (en) * | 1961-12-22 | 1966-06-28 | Mobay Chemical Corp | Process for the manufacture of upholstery |
| US3434411A (en) * | 1964-12-11 | 1969-03-25 | Weyerhaeuser Co | Vented cauls |
| DE2939314A1 (en) * | 1979-09-28 | 1981-04-02 | Albert 4270 Dorsten Stewing | Plastic foam injection mould - with fine channel structures on inner surfaces for venting excess blowing agent gas |
| US4264544A (en) * | 1973-10-02 | 1981-04-28 | The Unisource Corporation | Method of molding a rigid integral skin foamed resin product in a mold having a vented lid |
| FR2522006A1 (en) * | 1982-02-25 | 1983-08-26 | Valleylab Inc | PRESSURE SENSITIVE, HYDROPHILIC AND ELASTIC ADHESIVE, MANUFACTURING PROCESS, FABRIC COVERED WITH SAME, USES THEREOF |
| FR2646772A1 (en) * | 1989-05-12 | 1990-11-16 | Dutscher Dominique | Improved mattress for preventing bedsores, having longitudinal edges for protection and holding |
| WO1991009718A1 (en) * | 1989-12-21 | 1991-07-11 | Creme Art Corporation | Molding of open cell soft polyurethane foam |
-
1993
- 1993-03-18 FR FR9303247A patent/FR2702652B1/en not_active Expired - Fee Related
-
1994
- 1994-03-17 WO PCT/FR1994/000293 patent/WO1994021437A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3258511A (en) * | 1961-12-22 | 1966-06-28 | Mobay Chemical Corp | Process for the manufacture of upholstery |
| US3434411A (en) * | 1964-12-11 | 1969-03-25 | Weyerhaeuser Co | Vented cauls |
| US4264544A (en) * | 1973-10-02 | 1981-04-28 | The Unisource Corporation | Method of molding a rigid integral skin foamed resin product in a mold having a vented lid |
| DE2939314A1 (en) * | 1979-09-28 | 1981-04-02 | Albert 4270 Dorsten Stewing | Plastic foam injection mould - with fine channel structures on inner surfaces for venting excess blowing agent gas |
| FR2522006A1 (en) * | 1982-02-25 | 1983-08-26 | Valleylab Inc | PRESSURE SENSITIVE, HYDROPHILIC AND ELASTIC ADHESIVE, MANUFACTURING PROCESS, FABRIC COVERED WITH SAME, USES THEREOF |
| FR2646772A1 (en) * | 1989-05-12 | 1990-11-16 | Dutscher Dominique | Improved mattress for preventing bedsores, having longitudinal edges for protection and holding |
| WO1991009718A1 (en) * | 1989-12-21 | 1991-07-11 | Creme Art Corporation | Molding of open cell soft polyurethane foam |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1994021437A1 (en) | 1994-09-29 |
| FR2702652B1 (en) | 2000-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse | ||
| RN | Application for restoration | ||
| FC | Decision of inpi director general to approve request for restoration | ||
| ST | Notification of lapse |
Effective date: 20101130 |